need help quick

[MaKaPhiLLy]

Just installed dejon power ic pipe with hks ssqv3 bov aftermarket intake. Turbo x's BC. Bov is recirculated. Theres crazy wg flutter when it blows off. Now if I take the recirculation tube off n plug the intake hole its fine it blows off and no wg flutter? I'm stumped. Help please

Anyone have a quick answer? I gotta be at work at 11 et. I got 45mins before I gotta leave. Only car I got now.

Anyone have a quick answer? I gotta be at work at 11 et. I got 45mins before I gotta leave. Only car I got now.

 

[gst96spyderman]

what type of wg? External or internal? external soulution is change out the rubber. Possibly the wg itself is leaking somewhere.

 

[MaKaPhiLLy]

Internal stock

 

[gst96spyderman]

Well, sounds like you need to take apart the WG and see how it works. I'd replace some internal parts on WG bwfore saying you need new WG. sounds like something not too difficult. Probably after the WG is taken apart you'll be able to see what the issue is after messing with it. Post some pics if possible. Sorry you missed work

 

[LiquidX]

Are you actually trying to talk about the wastegate or the blow off valve?

The wastegate has nothing to do with how your blow off valve is connected to the intake. Once the pressure in the vacuum line builds up enough to over come the spring pressure the actuator pushes the waste gate flapper open to allow exhaust to bypass the turbine. I have never heard of waste gate flutter.

The BOV can flutter if it's not adjusted properly. It's ok to drive with the flutter, it's just not at the proper adjustment.

 

[MaKaPhiLLy]

But why when I take the recirculation tube off the wg stops fluttering and bov works if I have the recirculation tube on the bov makes hardly any noise and the wg flutters then

 

[EagleTSIawd]

I had an HKS SSQV and it fluttered when I recirculated it, it's the design of the valve that causes this. It's got two valves, one for low pressure release and another for high. In my opinion, the SSQV is design to blow out in the open and be laud. In other words, get it to vent out or use a different blow off valve for recirculating.

 

[MaKaPhiLLy]

I know its wastegate flutter ### the wg actuator goes back n forth. And hks ssqv3 how do you adjust it? My car is 99 Gst and has 55,000miles I doubt the wg is bad yet its been stock until now and ran normal not beat

 

[EagleTSIawd]

Ssqv3 isn't adjustable, best you could do is give it a single vacuum line, dont tap anything to it.

 

[MaKaPhiLLy]

Its on its own vacuum line str8 on the intake manifold. And when I say the wg actuator goes back n forth it does it like 3-4times.

 

[EagleTSIawd]

Does it do this when you let go of the gas? Or as you floor it and build boost?

 

[MaKaPhiLLy]

When I let go of the gas

 

[Below Ambient]

sounds like the BOV isn't functioning and the noise you're hearing is probably compressor surge

 

[EagleTSIawd]

I see, there is little you can do there. Just other than venting the blow off valve like I said but for that you will need a GM MAF. I swapped mine to synapse blow off valve because its got the same mounting bracket design and it fixed the problem. If it flutters on very low psi its nothing to worry about, for me the laudness and flutter got annoying.

sounds like the BOV isn't functioning and the noise you're hearing is probably compressor surge

Compressor surge only occurs when building boost, where the turbo flows more air than the engine can take in, so it backs up and creates a flutter noise as you floor it. This is bad and can damage the turbo or engine.

 

[MaKaPhiLLy]

ok so is this safe? Im running 12psi and it does it the same when its at 12psi or right on the 0 for vac/boost.

Sounds just like this but! it doesnt have the bov sound after. its just the taa taa taa
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[EagleTSIawd]

Yeah I know what you mean, that's exactly how mine was and is now after I swapped it to synapse. I run mine at 15psi, with the hks as the boost got higher it fluttered less (with it recirculated), it's normal. I ran it like that for a few years with no problems.

 

[MaKaPhiLLy]

yea but idk i still dont like how its making the turbo back spin thats not good for it? The wg shouldnt open close open close open close like that? and if i take the recirculation kit off and hold my hand over the nipple on the intake it doesnt do it anymore and the bov actually makes noise and its loud what i want. soon as the recirculation kit is back on the bov makes no noise and i think the air is forcing into the turbo causing it to back spin and make the "wg flutter"? which shouldnt be good? Am I right?

 

[dexterholland04]

Ok, your WG is not the piece that is fluttering. Your WG opens at a predetermined point when you are under boost on order to bypass some exhaust gasses past the turbo blades. This is what helps regulate the overall speed/boost pressure of the turbo. You more than likely have compressor surge.

 

[MaKaPhiLLy]

Ok thanks.. So does that make the wg open n close like that and why's it not do it when its vented?

idk if it'll help but ill get some pics of my setup and try n get a video for the sound and everything tomorrow.

 

[LiquidX]

Ok, your WG is not the piece that is fluttering. Your WG opens at a predetermined point when you are under boost on order to bypass some exhaust gasses past the turbo blades. This is what helps regulate the overall speed/boost pressure of the turbo. You more than likely have compressor surge.

Do you even know what compressor surge is? It was already defined in an earlier post. True compressor surge only happens during boost when the motor cannot use the full volume of air that is being produced in the intake track and works it way back out of the turbo which stalls it by attempting to spin it backwards.

The only other way is when the throttle plate closes and the BOV does not open causing the back pressure to reach the turbo and spin it backwards.

The SSQV will open being the plunger style of BOV.

It sounds stupid but have you even performed a proper boost leak test to verify no pin holes in your vacuum lines. Use a spray bottle of soapy water and look for bubbles.

Also what makes you dead certain it's your wastegate. Unless you have a camera under the hood when you are driving then you cannot tell if your wastegate actuator rod is moving back and forth. For that to actually happen it would need to be under boost and have a leak that leaks out the preside needed to open the gate, builds the pressure back up, releases the pressure, repeat.

You wastegate also does not make any noise unless you are dumping to the atmosphere and hit your set boost pressure.

 

[MaKaPhiLLy]

What can I do to solve this then? I mean I can't be getting to much airflow from from the Turbo its stock. What could it be? Idk about everything on these cars but I do know some. Any advice is greatly appreciated. And will it hurt to vent it if it runs fine? ### the flutter is gone when vented

 

[LiquidX]

You do not want to vent on a MAF based vehicle unless it's the GM MAF in blow through.

Have you checked the recirc tube for a clog?

 

[MaKaPhiLLy]

Yea the tube is not clogged its fine Idk what's going on. Would it help if I had video of the sound

This didn't start until I put the dejon power upper ic pipe that goes to sidemount and the hks ssqv3. So could it be something with that?

 

[MaKaPhiLLy]

As of now the only thing we can think of is the bov isn't functioning with the recirculation kit on. Soon as the recirculation kits off and its vented it works fine. Anyone have any idea why or what to do to fix it?

Be nice if I could actually get some response. Thought That's what the forums are for to get and give help. Guess ill go guess n see if anything else messes up too.

 

[MaKaPhiLLy]

Took the hks off its getting sold. Bought a synapse synchronic bov.